-// These methods are obsolete but use in AliEMCALRecPoint - keep it now
-//______________________________________________________________________
-Int_t AliEMCALGeometry::TowerIndex(Int_t ieta,Int_t iphi) const {
- // Returns the tower index number from the based on the Z and Phi
- // index numbers.
- // Inputs:
- // Int_t ieta // index along z axis [1-fNZ]
- // Int_t iphi // index along phi axis [1-fNPhi]
- // Outputs:
- // none.
- // Returned
- // Int_t index // Tower index number
-
- if ( (ieta <= 0 || ieta>GetNEta()) ||
- (iphi <= 0 || iphi>GetNPhi())) {
- Error("TowerIndex", "Unexpected parameters eta = %d phi = %d!", ieta, iphi) ;
- return -1;
- }
- return ( (iphi - 1)*GetNEta() + ieta );
-}
-
-//______________________________________________________________________
-void AliEMCALGeometry::TowerIndexes(Int_t index,Int_t &ieta,Int_t &iphi) const {
- // Inputs:
- // Int_t index // Tower index number [1-fNZ*fNPhi]
- // Outputs:
- // Int_t ieta // index allong z axis [1-fNZ]
- // Int_t iphi // index allong phi axis [1-fNPhi]
- // Returned
- // none.
-
- Int_t nindex = 0;
-
- if ( IsInECA(index) ) { // ECAL index
- nindex = index ;
- }
- else {
- Error("TowerIndexes", "Unexpected Id number!") ;
- ieta = -1;
- iphi = -1;
- return;
- }
-
- if (nindex%GetNZ())
- iphi = nindex / GetNZ() + 1 ;
- else
- iphi = nindex / GetNZ() ;
- ieta = nindex - (iphi - 1) * GetNZ() ;
-
- if (gDebug==2)
- printf("TowerIndexes: index=%d,%d, ieta=%d, iphi = %d", index, nindex,ieta, iphi) ;
- return;
-
-}
-
-//______________________________________________________________________
-void AliEMCALGeometry::EtaPhiFromIndex(Int_t index,Float_t &eta,Float_t &phi) const {
- // given the tower index number it returns the based on the eta and phi
- // of the tower.
- // Inputs:
- // Int_t index // Tower index number [1-fNZ*fNPhi]
- // Outputs:
- // Float_t eta // eta of center of tower in pseudorapidity
- // Float_t phi // phi of center of tower in degrees
- // Returned
- // none.
- Int_t ieta, iphi;
- Float_t deta, dphi ;
-
- TowerIndexes(index,ieta,iphi);
-
- if (gDebug == 2)
- printf("EtaPhiFromIndex: index = %d, ieta = %d, iphi = %d", index, ieta, iphi) ;
-
- deta = (GetArm1EtaMax()-GetArm1EtaMin())/(static_cast<Float_t>(GetNEta()));
- eta = GetArm1EtaMin() + ((static_cast<Float_t>(ieta) - 0.5 ))*deta;
-
- dphi = (GetArm1PhiMax() - GetArm1PhiMin())/(static_cast<Float_t>(GetNPhi())); // in degrees.
- phi = GetArm1PhiMin() + dphi*(static_cast<Float_t>(iphi) - 0.5);//iphi range [1-fNphi].
-}
-
-//______________________________________________________________________
-Int_t AliEMCALGeometry::TowerIndexFromEtaPhi(Float_t eta,Float_t phi) const {
- // returns the tower index number based on the eta and phi of the tower.
- // Inputs:
- // Float_t eta // eta of center of tower in pseudorapidity
- // Float_t phi // phi of center of tower in degrees
- // Outputs:
- // none.
- // Returned
- // Int_t index // Tower index number [1-fNZ*fNPhi]
-
- Int_t ieta,iphi;
-
- ieta = static_cast<Int_t> ( 1 + (static_cast<Float_t>(GetNEta()) * (eta - GetArm1EtaMin()) / (GetArm1EtaMax() - GetArm1EtaMin())) ) ;
-
- if( ieta <= 0 || ieta > GetNEta() ) {
- Error("TowerIndexFromEtaPhi", "Unexpected (eta, phi) = (%f, %f) value, outside of EMCAL!", eta, phi) ;
- return -1 ;
- }
-
- iphi = static_cast<Int_t> ( 1 + (static_cast<Float_t>(GetNPhi()) * (phi - GetArm1PhiMin()) / (GetArm1PhiMax() - GetArm1PhiMin())) ) ;
-
- if( iphi <= 0 || iphi > GetNPhi() ) {
- Error("TowerIndexFromEtaPhi", "Unexpected (eta, phi) = (%f, %f) value, outside of EMCAL!", eta, phi) ;
- return -1 ;
- }
-
- return TowerIndex(ieta,iphi);
-}
-
-//______________________________________________________________________
-Bool_t AliEMCALGeometry::AbsToRelNumbering(Int_t AbsId, Int_t *relid) const {
- // Converts the absolute numbering into the following array/
- // relid[0] = Row number inside EMCAL
- // relid[1] = Column number inside EMCAL
- // Input:
- // Int_t AbsId // Tower index number [1-2*fNZ*fNPhi]
- // Outputs:
- // Int_t *relid // array of 2. Described above.
- Bool_t rv = kTRUE ;
- Int_t ieta=0,iphi=0,index=AbsId;
-
- TowerIndexes(index,ieta,iphi);
- relid[0] = ieta;
- relid[1] = iphi;
-
- return rv;
-}
-
-//______________________________________________________________________
-void AliEMCALGeometry::PosInAlice(const Int_t *relid, Float_t &theta, Float_t &phi) const
-{
- // Converts the relative numbering into the local EMCAL-module (x, z)
- // coordinates
- Int_t ieta = relid[0]; // offset along x axis
- Int_t iphi = relid[1]; // offset along z axis
- Int_t index;
- Float_t eta;
-
- index = TowerIndex(ieta,iphi);
- EtaPhiFromIndex(index,eta,phi);
- //theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
- theta = 2.0*TMath::ATan(TMath::Exp(-eta));
-
- // correct for distance to IP
- Float_t d = GetIP2ECASection() - GetIPDistance() ;
-
- Float_t correction = 1 + d/GetIPDistance() ;
- Float_t tantheta = TMath::Tan(theta) * correction ;
- theta = TMath::ATan(tantheta) * TMath::RadToDeg() ;
- if (theta < 0 )
- theta += 180. ;
-
- return;
-}
-
-//______________________________________________________________________
-void AliEMCALGeometry::PosInAlice(Int_t absid, Float_t &theta, Float_t &phi) const
-{
- // Converts the relative numbering into the local EMCAL-module (x, z)
- // coordinates
- Int_t relid[2] ;
- AbsToRelNumbering(absid, relid) ;
- Int_t ieta = relid[0]; // offset along x axis
- Int_t iphi = relid[1]; // offset along z axis
- Int_t index;
- Float_t eta;
-
- index = TowerIndex(ieta,iphi);
- EtaPhiFromIndex(index,eta,phi);
- theta = 2.0*TMath::ATan(TMath::Exp(-eta)) ;
-
- // correct for distance to IP
- Float_t d = 0. ;
- if (IsInECA(absid))
- d = GetIP2ECASection() - GetIPDistance() ;
- else {
- Error("PosInAlice", "Unexpected id # %d!", absid) ;
- return;
- }
-
- Float_t correction = 1 + d/GetIPDistance() ;
- Float_t tantheta = TMath::Tan(theta) * correction ;
- theta = TMath::ATan(tantheta) * TMath::RadToDeg() ;
- if (theta < 0 )
- theta += 180. ;
-
- return;
-}
-
-//______________________________________________________________________
-void AliEMCALGeometry::XYZFromIndex(const Int_t *relid,Float_t &x,Float_t &y, Float_t &z) const {
- // given the tower relative number it returns the X, Y and Z
- // of the tower.
-
- // Outputs:
- // Float_t x // x of center of tower in cm
- // Float_t y // y of center of tower in cm
- // Float_t z // z of centre of tower in cm
- // Returned
- // none.
-
- Float_t eta,theta, phi,cylradius=0. ;
-
- Int_t ieta = relid[0]; // offset along x axis
- Int_t iphi = relid[1]; // offset along z axis.
- Int_t index;
-
- index = TowerIndex(ieta,iphi);
- EtaPhiFromIndex(index,eta,phi);
- theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
-
- cylradius = GetIP2ECASection() ;
-
- Double_t kDeg2Rad = TMath::DegToRad() ;
- x = cylradius * TMath::Cos(phi * kDeg2Rad ) ;
- y = cylradius * TMath::Sin(phi * kDeg2Rad ) ;
- z = cylradius / TMath::Tan(theta * kDeg2Rad ) ;
-
- return;
-}
-
-//______________________________________________________________________
-void AliEMCALGeometry::XYZFromIndex(Int_t absid, TVector3 &v) const {
- // given the tower relative number it returns the X, Y and Z
- // of the tower.
-
- // Outputs:
- // Float_t x // x of center of tower in cm
- // Float_t y // y of center of tower in cm
- // Float_t z // z of centre of tower in cm
- // Returned
- // none.
-
- Float_t theta, phi,cylradius=0. ;
-
- PosInAlice(absid, theta, phi) ;
-
- if ( IsInECA(absid) )
- cylradius = GetIP2ECASection() ;
- else {
- Error("XYZFromIndex", "Unexpected Tower section") ;
- return;
- }
-
- Double_t kDeg2Rad = TMath::DegToRad() ;
- v.SetX(cylradius * TMath::Cos(phi * kDeg2Rad ) );
- v.SetY(cylradius * TMath::Sin(phi * kDeg2Rad ) );
- v.SetZ(cylradius / TMath::Tan(theta * kDeg2Rad ) ) ;
-
- return;
-}
-